turn to ashes in your mouth
turn to ashes in (one's) mouth
To become sickeningly disappointing; to go from being a source of joy or hope to one of despair or anger. The joy of our wedding turned to ashes in my mouth as her cruel nature soon began bubbling to the surface. The hope we had turned to ashes in our mouths as it became increasingly clear that the president wouldn't uphold any of his campaign promises.
turn to ashes in your mouthbecome bitterly disappointing or worthless.
This phrase alludes to the Dead Sea fruit, a legendary fruit which looked appetizing but turned to smoke and ashes when someone tried to eat it. The fruit are described in the Travels attributed to the 14th-century writer John de Mandeville .
1995 Guardian Those who marvelled at the phenomenal climbing feats of Pedro Delgado in the 1988 Tour found words such as ‘heroic’ and ‘Herculean’ turn to ashes in their mouths during the probenecid (a masking agent) scandal.